Glass railings are one of the most elegant and modern choices for outdoor spaces like balconies, decks, patios, and staircases. They open up views, create a clean architectural look, and add value to your property. But when it comes to safety and long-term durability, not just any glass will do.
If you’re considering installing glass railings outdoors, it’s important to understand the types of glass used — and why. Let’s explore the top options: tempered glass and laminated tempered glass.
🔹 Tempered Glass: The Industry Standard
Tempered glass (also known as toughened glass) is about four to five times stronger than regular (annealed) glass. It is created by heating the glass to high temperatures and then rapidly cooling it, which increases its strength and impact resistance.
If broken, it shatters into small, blunt pieces rather than sharp shards — making it much safer for families, especially in elevated spaces.
Key Benefits:
- Highly resistant to wind, rain, snow, and temperature changes
- Approved by most building codes
- Clear visibility and a clean, frameless look
- Low maintenance and easy to clean
Best used for: balconies, decks, patios, stair railings
🔹 Laminated Tempered Glass: Extra Safety
Laminated glass is made by bonding two layers of tempered glass with a plastic interlayer — typically polyvinyl butyral (PVB). Even if both glass layers crack, the interlayer holds them in place. This is similar to car windshields and offers the highest level of safety in glass railing systems.
Advantages:
- Superior impact resistance
- Holds together if shattered — no falling glass
- Blocks 99% of UV rays
- Better sound insulation
- Can include tinted or frosted options for privacy
Best used for: windy or coastal areas, rooftops, homes with small children or pets
✅ Other Considerations When Choosing Glass for Railings:
- Thickness: For outdoor railings, 10mm to 12mm glass is common. Thicker glass is stronger but heavier.
- Clarity: Low-iron glass offers ultra-clear views without the greenish tint found in standard glass.
- Mounting system: Glass can be frameless, post-mounted, or held in place with base shoes (tracks).
- Building codes: Always check your local regulations. Many areas require laminated glass above certain heights.
If you’re unsure which option is best for your space, you can get expert advice here.
🛠Pro Tip:
Never attempt to install glass railings yourself unless you’re trained. Proper installation by professionals ensures safety, stability, and compliance with building codes. Even high-quality glass is only as good as its mounting system.
Final Thoughts
Whether you choose tempered or laminated tempered glass, both offer strength, beauty, and long-term value for your outdoor space. The decision comes down to your safety needs, aesthetic goals, and environmental conditions.
In either case, glass railings can transform your balcony or deck into a bright, open, and secure space you’ll enjoy for years to come.